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This guide explores polyatomic ions and the prefixes used to denote their quantities. It covers key prefixes such as mono-, di-, tri-, tetra-, pent-, hex-, hept-, oct-, non-, and dec-. Additionally, it provides a list of important polyatomic ions including nitrate (NO3⁻), nitrite (NO2⁻), ammonium (NH4⁺), sulfate (SO4²⁻), sulfite (SO3²⁻), phosphate (PO4³⁻), phosphite (PO3³⁻), carbonate (CO3²⁻), bicarbonate (HCO3⁻), acetate (C2H3O2⁻), cyanide (CN⁻), chlorate (ClO3⁻), chlorite (ClO2⁻), and peroxide (O2²⁻).
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